(core) freshen grist-core build

Summary:
 * adds a smoke test to grist-core
 * fixes a problem with highlight.js failing to load correctly
 * skips survey for default user
 * freshens docker build

Utility files in test/nbrowser are moved to core/test/nbrowser, so that gristUtils are available there. This increased the apparent size of the diff as "./" import paths needed replacing with "test/nbrowser/" paths. The utility files are untouched, except for the code to start a server - it now has a small grist-core specific conditional in it.

Test Plan: adds test

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2768

package.json

@@ -9,7 +9,8 @@
     "start": "tsc --build -w --preserveWatchOutput & catw app/client/*.css app/client/*/*.css -o static/bundle.css -v & webpack --config buildtools/webpack.config.js --mode development --watch --hide-modules & NODE_PATH=_build:_build/stubs nodemon -w _build/app/server -w _build/app/common _build/stubs/app/server/server.js & wait",
     "install:python": "buildtools/prepare_python.sh",
     "build:prod": "tsc --build && webpack --config buildtools/webpack.config.js --mode production && cat app/client/*.css app/client/*/*.css > static/bundle.css",
-    "start:prod": "NODE_PATH=_build:_build/stubs node _build/stubs/app/server/server.js"
+    "start:prod": "NODE_PATH=_build:_build/stubs node _build/stubs/app/server/server.js",
+    "test": "NODE_PATH=_build:_build/stubs mocha _build/test/nbrowser/Smoke.js"
   },
   "keywords": [
     "grist",
@@ -23,14 +24,19 @@
   "private": false,
   "devDependencies": {
     "@types/backbone": "1.3.43",
+    "@types/chai": "4.1.7",
+    "@types/chai-as-promised": "7.1.0",
     "@types/content-disposition": "0.5.2",
     "@types/diff-match-patch": "1.0.32",
     "@types/double-ended-queue": "2.1.0",
     "@types/express": "4.16.0",
+    "@types/form-data": "2.2.1",
     "@types/fs-extra": "5.0.4",
     "@types/image-size": "0.0.29",
     "@types/js-yaml": "3.11.2",
     "@types/lodash": "4.14.117",
+    "@types/mime-types": "2.1.0",
+    "@types/mocha": "5.2.5",
     "@types/moment-timezone": "0.5.9",
     "@types/node": "^10",
     "@types/node-fetch": "2.1.2",
@@ -38,12 +44,18 @@
     "@types/pidusage": "2.0.1",
     "@types/plotly.js": "1.44.15",
     "@types/redlock": "3.0.2",
+    "@types/selenium-webdriver": "4.0.0",
     "@types/sqlite3": "3.1.6",
     "@types/tmp": "0.0.33",
     "@types/uuid": "3.4.4",
     "catw": "1.0.1",
+    "chai": "4.2.0",
+    "chai-as-promised": "7.1.1",
+    "mocha": "5.2.0",
+    "mocha-webdriver": "0.2.8",
     "moment-locales-webpack-plugin": "^1.2.0",
     "nodemon": "^2.0.4",
+    "selenium-webdriver": "3.6.0",
     "source-map-loader": "^0.2.4",
     "stats-webpack-plugin": "^0.7.0",
     "typescript": "3.9.3",
@@ -75,6 +87,7 @@
     "fs-extra": "7.0.0",
     "grain-rpc": "0.1.6",
     "grainjs": "1.0.1",
+    "highlight.js": "9.13.1",
     "i18n-iso-countries": "6.1.0",
     "image-size": "0.6.3",
     "jquery": "2.2.1",